| 摘要 |
Disclosed is a load following operation method for a fuel cell system, wherein a fuel is reliably reformed to obtain a high power generation efficiency during a load following operation of a fuel cell system. Two or more methods selected among a steam reforming method, a partial oxidation reforming method, and an autothermal reforming method are defined as i-th reforming method. Functions Fi=fi(P), P=fi-1(Fi), and ?i=gi(P) are obtained in advance. If there is a number i which satisfies FiR=Fimin , the following process (1) is performed when PD=P is satisfied, and the following process (2) is performed when PD>PiM is satisfied. In the process (1), if fi(PD)=FiR is satisfied, Pi*=PD and Fi*=fi(PD), and if fi(PD)>FiR is satisfied, Pi*=(the maximum fi-1(FiR) which is less than PD) and Fi*=FiR. In the process (2), if fi(PiM)=FiR is satisfied, Pi*=PiM and Fi*=fi(PiM), and if fi(PiM)>FiR is satisfied, Pi*=(the maximum fi-1(FiR)) and Fi*=FiR. If there are a plurality of numbers i which satisfy FiR=Fimin, PI*, a reforming method, and FI*, which relate to the number i which provides the maximum ?i=gi(Pi*), are adopted. |
